Isaac n



(No Model.) I

I. N. FORBES. LASTINGMAGHINB.

Patented SeptZS, 1890..

mi Noms mans om. vuovouma., msmmzmn, n, c.

T0 all whom it may concern:

UNITED STATES PATENT OFFICE.

ISAAC N. FORBES, OF NEIV YORK, N. Y.

LASTING-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 436,850, dated September 23, 1890.

Application filed June 8, 1889.

Be it known that I, ISAAC N. FORBES, a citizen of the United States, residing at New York, 1n the county of New York and State of New York, have invented certain new 'and useful Improvements in Lasting-Machines and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in means whereby the lasting pieces or clamps which operate to force the edges of the upper over and press it down upon the last are automatically depressed at their inner and operating ends or edges, such depression taking place after said ends have passed the line of the boundary of the inner sole and before they have co'mpleted their inward movement. I am by such ineans enabled to obviate a difculty met with 1n many lasting-machines, namely, the tendency of the fingers or side clamps to push the inner sole inward and force it upward 'away from its proper position upon the last and beneath the edges of the upper leather. I am also enabled to perform the lasting operation more perfectly and expeditiously.

It also consists in a lasting-piece, fingerplate, or clamp of novel and simple construction, by the use of which the lasting operation may be most readily and efficiently performed and the machine changed to adapt it to all sizes, classes, and variations of lasts, including those for right and left foot boots and shoes with the greatest ease and rapidity.

In order to make my invention more clearly understood, I have shown in the acompanying drawings means for carrying the same into practical effect.

In said drawings, Figure l is an end view, partly in cross-section, of so much of a lasting-machine embodying my invention as is necessary for an understanding of the same. Fig. 2 `is an inner side view of one of the stands and a portion of t-he actuating mechanism for the side lasting devices. Fig. 3is a vertical longitudinal section of the same on line 3 3, Fig. l. Fig. t is a top view of the same. Fig. 5 is a horizontal sectional view on line 5 5, Fig. 3. Fig. 6 is a top view of a side-lasting clamp constructed according to my invention. Figs. 7 and 8 are respectively Serial No. 313,616. (No model.)

a top and an inner edge view of a modified form of the same.

Referring to the drawings, A indicates the table of suitable construction-such as those which are fully described in detail in my pending applications, Serial Nos. 303,927 and 312,484-at the sides of which are bolted, as shown at h4, or otherwise secured, the stands B B. Each of said stands consists of a base-plate b, slotted as shown at b', two upwardly and outwardly extending arms b2, and a horizontal bearing-sleev`e b3, secured to or formed with the upper ends of arms h2. In these sleeves are supported the side-last; ing devices in such manner as to beV movable toward and from the last. The slide for this purpose is shown at D, and consists of a tubular portion cl, which fits and is adapted to slide in the bearing b3, and provided at its inner end with a vertical bearing or socket d. The tube d is longitudinally grooved, as seen at d2, and guided in its reciprocation by a pin b5, which is fixed in the bearing b3 and engages said groove. Such reciprocation is effected by the side levers O. These levers are forked at their upper ends and provided with short connect-ing rods or links c', hinged to the lever-arms c at c2, and hinged at their other ends upon bosses d5, formed upon the opposite sides of the slide D. The rods are there secured by means of bolts d4, which are screwed into said bosses and theheads of which overlap upon the outer faces of the rods. If desired, the bolts may be shouldered and the bearings for links c formed thereon. Intermediately between their upperand lower ends the side levers O are provided with 'adjus'table fulcrunis E. Said fulcrunn is mainly constructed and operates as described in detailV in my pending application, Serial No. 303,927. It is sufficient to say that it is composed of a fulcrum-pin e, which passes through the lever O, a slide-bearing piece c', which is vertically recessed to receive the lever and horizontally perforated for said pin, a stem c2, forming a part of piece e, an externally-screw-threaded adjustable sleeve e3, which surrounds said stem, a nut c4, which screws tightly upon the reduced andthreaded endof the stem and bears loosely against the outer face of sleeve e3, an internally-threaded bushing e5, which engages the sleeve es, and a cylindrical slide-bearing IOO e", which at its inner end receives and guides the piece e', and at its outer end is internally screw-threaded to engage the bushing c5. The bearing e preferably is formed in one piece with the standard B, and is longitudinally slotted at e7 in the vertical plane of slot b to receive and permit the oscillation of the lever. The top of the table is similarly slotted in the same plane, and the lower ends of levers C extending down therethrough are engaged and actuated by suitable mechanism. (Not shown.) Such mechanism is preferably the same as that fully described in detail in my application, Serial No. 303,927, hereinbefore referred to.

It will be seen that the'points to which slides D will be moved by the levers C may be varied by screwing sleeve e3, by means of its iianged and milled head e8, inward or outward, as may be desired.

The side-lasting pieces or clamps are shown at F.' They are preferably formed of dropped spring-steel,Vv and their inwardly-extending operative portions f are very thin and elastic. The portion f is curved vertically, as shown, to conform to the contour of the bottom of the last, and the inner edge f is curved horizontally to correspond with the edge of the insole,'over which it passes in the operationof lasting. Of these clamping-plates there will be provided two for each last, where the variations of the latter demand, and each clamp will be properly numbered to indicate the last and the side thereof to which it belongs. A vertical rib or flange f2 is formed with the outer edge of the elastic portion f, as shown in Figs. 1, 6, 7, and 8, for the pur- I pose of strengthening said elastic portion and v portions of the last.

enabling the operating force to be applied to it 'uniformly, so that it will act with equal pressure at both ends and at the intermediate At the outer side of the rib f2 is formed the horizontal outwardlytending shank f3, which serves as the means for securing the clamp F in its holder.

The holder G is formed by two hemispherical vise clamping-pieces g, each of which is provided on its iiat face with a half-round cylindrical bearing, and which iit and are held in an inner socket or hemispherical bear- .ingrg which in turn is carried in and by theholder d of the slide D, already described. The socket g is provided at its upper end with an internal screw-thread, engaged by a correspondingly-threaded plug g2. A stopscrew g (see Fig. 4) engages said plug and socket to prevent the unscrewing of the -former. In a central perforation of the latter lits the vertical stem g3 of a concave bearingpiece g4, which is adapted to iit the upper of the two hemispheres g. A clamping-screw g5 engages a thread in the upper part of the perforation of screw-plug g2, bears upon the end of stem g3, and is adapted, when screwed down, to firmly clamp the shank f3 of the lasting device between the parts g g. The

upper end of the stem is rounded,..and the lower end of screw g5 slightly tapered or beveled in order that their pressure upon one another may not cause their ends to upset or bind in their bearing in plug g2. The setscrew g5 is provided with an oil-hole, as shown, through whichthepartsconstitutingtheholder may be properly lubricated. The sockets d and g are perforated, as shown in Figs. l and 5, to admit of the entrance of shank f3 and of its universal adjustment. It will thus be seen that the lasting-clamp F is provided with a universal ball-and-socket joint, which at the same time constitutes a vise-clamp holder of the most effective and easily-operated description. I will now describe the means by which such holder is automatically oscillated to depress the edge f of the lasting-clamp at the proper time. The hemispherical portion of the inner socket g iits that of the outer socket d', but the upper part of the outer socket is turned or bored slightly tapering or flaring from the plane of the center of its hemispherical portion upward and outward, thu's permitting of an oscillation within certain limits of the inner socket and a vertical movement of the edge of its lasting-clampF. The inner socket is held down in placel and its horizontal oscillation prevented bythe inner ends of bolts d4, which ends are turned oft to form journals and engage corresponding bearings bored vthrough the sides of the inner socket, as seen in Figs. 3 and 5. Each of said bolts is also provided on its inner end `with a small pin or extension d5, which engages a groove formed by two circular rabbets in the edges of the hemisphericai vise-clamps g, by which lengagement it is insured that the dividing plane of said clamps shall be kept approximately horizontal with one of the clamps above the other, which position is essential to the proper clamping action of the bearingpiece g4. 'The shank f3 being round, free rotation and adjustment are permitted in the only direction in which the vise-clamps are by pins d5 prevented from revolving.

d6 is a downward tubular extension of the socket d', and is bored out slightly tapering, as seen in Figs. l and 3, to permit of the oscillation within it of a similar smaller eXtension Q6 of the inner socket g. The outer eX- tension el is shorter than the inner, in order that it may not encounter the adjustable setscrew in the stop-arm hereinafter described, and the inner extension is provided with a spring (77, which tends constantly to throw the lower end of the holder G inward and the edge f of the lasting-clamp F upward. Said spring is preferably constructed and secured as shown in Figs. l and 3, in which it consists of a small flat tapered piece of proper elasticity and shape situated within the inner extension g6 and held at its upper end in the slot of a tapered plug g8, which is driven downward into the upper end of said extension, the bore of the latter being tapered to tit, and

'ICO

thereby compressed upon `the spring. The

lower and free end of vthis spring bears against in the inner extension q and resting at its outer end against the inner surface of the outer extension, or it may be secured in and frigid with the outer extension, as shown.

The stop for automatically oscillating the holders G is shown at H. It comprises a tubularstandard or post h, secured in the longitudinal T-groove or in an enlargement thereof 'of the table, where it is suitably clamped,

as fullydescribed in my. application, Serial No. 312,484, a Vertical shaft h', mounted in said standard, Y-arms h2 h2, formed with said shaft, and adjustable set-screws h3,

nmounted in screw-threaded holes in the upper ends of said arms. Said screws h3 are situated in the same vertical transverse plane with the lower ends of the extensions g6 g6 of holders G G andat such height that said extensions will as the levers C C move the lasting devices inward come in contact with them and be arrested, whereby the farther inward movement of said devices results in the depression of the side-lasting clamps F. The adjustment of screws h3 inward or outward by means of their milled heads h4 determines the time relative to the advance -of the lasting-clamps at which such depression shall take place. The depression should occur at the moment when the lasting-clamps have passed for a sufficient distance above and beyond the edge of the insole, thereby avoiding any displacement of the latter and forcing the upper and insole down firmly upon the last, as more fully described and illustrated in my said application, Serial No. 312,484.

In rst adjusting the lasting-clamps F to the last it is necessary that their holders G should be firmly held in position. therefore provided for temporarily securing Ysaid holders against oscillation in their sockets. Q9 is a conical milled nut or screw-sleeve engaging a corresponding thread upon the extension g, below the end of the outer extension d6. The upper and smaller portion of said nut is adapted to enter the end of the outer extension, and it will be readily understood that by screwing it up all oscillation of the inner extension and of the holder G will be prevented while the side clamp is being properly adjusted to the last. i g10 is a pin secured in the inner extension ge, and adapted to act as a stop to limit the unscrewing of the conical nut g".

The lasting-clamp F preferably has its blade or operating portion f divided into separate fingers f4, as seen in Fig. 6, to give greater iiexibility to the whole device and greater independence of action to the different parts of the edge f', according to the irregularities of the stock or last. At f5 are shown perfo- I have rations through said blade f at the bases of the fingers f4, which reduce the metal and add to their elasticity.

my invention has The mode of operation of been sufficiently set forth in the above dep scription of its construction.

It will be understood that the illustrations and description in this application are not extended beyond those parts of the machine comprised in my present invention.

The last-supports, head and toe lasting de;- i i vices, and the actuating mechani'sinare fully described in my pending applications, Serial Nos. 303,927 and 312,484,upon themac'hinede.- scribed, in which this present inventionl is -an improvement, taking the place of the respective side clamps of my former machines and their holding mechanism, including side levers.

I do not in this application claim, broadly, the adjustable fulcrums for the levers C, comprising the parts e, e', e2, e3, and e5, the same being the subject in part of my application, Serial No. 303,927, filed March 19, 1889.

I do not in this application claim an oscillav same, though differing somewhat in shape,

IOO

appearance, or operation from those hereinV illustrated and described.

Having thus described my invention, what I claim ist 1. In a lasting-inachine, the combination', with a lasting-piece, of a holder therefor comprising a universal joint and a clamp engag- IIO ing and adapted to secure the parts of said joint, by means of which said lasting-piece is mounted, adapted to be adjusted in all d'irections to conform to the last, and rigidly held, substantially as set forth.

2. In a lasting-machine, the combination, with a lasting -piece, of a holder therefor comprising a universal joint by means of which said piece is mounted and adapted to be adjusted in all directions to conform to the last, and a single clamping device by which all members of said joint are secured at one operation,substantially as set forth.

3. In a lasting-machine, the combination, with a lasting-piece consisting of an elastic curved continuous blade adapted to extend along the side of the last, of aholder therefor comprising a universal joint, by means of which said lasting-blade is mountedY and` adapted to be adjusted in all directions to comform to the las't, and a clamp engaging and securingthe parts of said joint, substantially as set forth.

4.: In a lasting machine, the herein described lasting .piece or clamp, provided'with a exible blade having a curved surface and curved along its edge, anda Vlongitudinal strengthening-rib integral therewith, substantially as set forth. v

5. In a lasting-machine, the herein-de- -scribed lasting piece or clamp, provided with v a flexible bladehaving a curved surface and curved along its edge, a longitudinal vertical strengthening-rib integral therewith, and a supporting-shank, substantially as set forth.

6. In a lasting-machine, the herein -described'lasting piece or clamp, provided with 1 a iiexible blade having a curved surface and curved along its edge and partly divided to i yform independent elastic fingers, all formed v1n a single piece, and a supporting-shank,E

substantially as set forth.

stantially asset forth.

`its edge and having a supporting-shank, sub- 8. In a lasting-machine, the combination, with a lasting-piece provided with a thin tlexible metallic blade adapted to extend from near the toe to near the heel of the last and to conform to the same, said blade having a curved surface and curved along its edge, of Q a slide, an oscillatory holder for said blade mounted on the slide, and a depressing mechanism for forcing said iiexible blade downward toward the bottom of the last, substantially as set forth.

with a lasting piece or clamp, a sliding support therefor, an actuating-lever and its ad-v justable fulcrum, of the stand B,'having formed with it the bearing b3 for said slide, and the bearing e6, adapted to receive the slide of said fulcrnm, substantially as set forth..

10. In alasting-machine, the combination, with a lasting piece or clamp and a holder therefor, of a slide-bearing consisting of the cylindrical bearing d, having at its inner end the holding-socket d', provided with the lateral bosses d3, substantiallyT as set forth.

11. In a lasting-machine, the combination, with a lasting piece or clamp, of a universallyadjustable holder for the same, consisting of a hemispherical socket, two separate hemisph'erical vise-clamp pieces provided between them .with abearing for a portion of the lasting-clamp, and a movable clamping-piece for Vforcing said vise-clamps together When iny position, substantially as set forth.

12. 'lhe'combination of4 a lasting piece or;

lclampl and a holder therefor comprising a socket g two hemispherical vise-clamps g g, having a bearing formed between them, the bearing-piece g4, and a securing-screw for the latter, substantially as set forth.

13. The combination, with a lasting piece or clamp, of a holder t-hereforcomprising the socket g', the two hemispherical vise-clamps, g g, having a bearing formedv between them and a circumferential groove, means for pressing said vise-clamps together, and inward projections from said socket which `engage said groove, substantially as set forth. t

14. The combination, with a lasting piece or clamp and a holder therefor comprising the socket d and the oscillating socket g mounted therein, of holding devices forthe lasting-clamp carried by said inner socket, and a spring acting to control the oscillation of the one socket relative to theother, substantially as set forth.

15.` The combination, with a lasting piece or clamp and a holder therefor provided with the inner socketg, of the slotted plug g8, the

spring g7, held thereby, the outer socket d',

.and the pin or screw CF, substantially asset forth.

16. The combination, with a lasting piece or clamp and a holder therefor provided with the inner oscillating socket g', having the screwthreaded extension Q6, ofy the Outer socket-piece, and the conical nut or sleeve g, fitting said screw-thread and adapted to en'- gage the outer socket-piece to prevent oscillation of the holder and lasting-clamp, substantialiy as set forth. y

17. The combination, with a lasting piece orclamp, the slide D, and the stop H, of the oscillating holder G, having a hemispherical socket g and the downward extension g,

j adapt-ed to engage said stop, substantially as 9. -In a lasting-machine, the combination,`

set forth.

18. The combination, with a lasting piece or clamp and a holder therefor comprising IOO IIO

the outer socket-piece d', having the hemispherical portion, and the inner socket g', having devices for securing and adjusting the lasting-clamp, of the lateral bolts d4, passing through the outer and engaging the inner socket, substantially as set forth.

19. The combination, with a lasting piece or clamp, the st-and B, having the arms b2, and the slide D, mounted in the upper end of said stand and having the lateral bosses d3, ofthe oscillating holder for said clamp mounted in said slide, the stop H, having the outwardlyproj ecting adj Listing-screw h3, the forked lever C, having its arms between the stand-arms b2 and adapted to pass on each side of the screw h3, and the links c', connecting arms c with said bosses, substantially as set forth.

20. Ina lasting-machine having side clamps changeable at will from right to left foot side clamps, or vice versa, the combination, with said clamps, of a universal clamp-holder for the speedy changing and adjusting of .the

same,comprisingasoekehtwo-separatehemipart the said socket-piece is hinged and 1o spherical' clamping-pieces, and a movable adapted to be oscilla/neel,l substantially as set clamping-piece for securing the latter, subforth.

stantially as set forth. Y In testimony whereof I ai'lx my signature in 21. In a lasting-machine, the combination, the presence of two Witnesses.

with a. lasting-clamp, of a holder therefor ISAAC N. FORBES.

comprising a. socket-piece, two hemspherioal Witnesses:

clamping-pieces, means for securing thelatter, H. N. LOW,

and a part movable toward the last, in which E. K. STURTEVANT. 

